From: Zou Nan hai <nanhai.zou@intel.com>
Date: Wed, 13 Dec 2006 21:24:35 +0000 (-0800)
Subject: if (tex width < 4), mipmap calculation will be out of range
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=696fe3f52e0e7893740b430835f8c95611de3dd3;p=mesa.git

if (tex width < 4), mipmap calculation will be out of range
---

diff --git a/src/mesa/drivers/dri/i965/brw_tex_layout.c b/src/mesa/drivers/dri/i965/brw_tex_layout.c
index 1353325afff..bf7047f644e 100644
--- a/src/mesa/drivers/dri/i965/brw_tex_layout.c
+++ b/src/mesa/drivers/dri/i965/brw_tex_layout.c
@@ -138,7 +138,7 @@ GLboolean brw_miptree_layout( struct intel_mipmap_tree *mt )
 	 
 	 /* Layout_below: step right after second mipmap.
 	  */
-	 if (level == mt->first_level + 1) {
+	 if (level == mt->first_level + 1 && mt->pitch > 4) {
 	    x += mt->pitch / 2;
 	    x = (x + 3) & ~ 3;
 	 }